Entry Test MCQ :: MCAT ECAT Chemistry Paper
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31. |
The hardest of the following solids is |
A. |
sodium |
B. |
diamond |
C. |
graphite |
D. |
magnesium |
Answer: Option B
Explanation:
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32. |
Which of the following elements has greater 1st ionization energy |
Answer: Option C
Explanation:
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33. |
Which of the solid does not contain covalent bond |
Answer: Option A
Explanation:
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34. |
Which of the following molecule is polar |
A. |
CCI4 |
B. |
CO2 |
C. |
BF3 |
D. |
none of the above |
Answer: Option D
Explanation:
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35. |
The balanced chemical equation for the reaction which occurs when Be is added to water is |
A. |
Be+2H2O?Be (OH)2+H2 |
B. |
Be+H2O?Be (OH)2+H2 |
C. |
Be+H2O?[Be (OH)4]+2+H2 |
D. |
no reaction |
Answer: Option D
Explanation:
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36. |
The number of bonds in nitrogen molecule is |
A. |
one ? one ? bond |
B. |
two ? one ? bond |
C. |
one ? and two ? bond |
D. |
three ? bonds only |
Answer: Option C
Explanation:
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37. |
Which of the following theories is superior to others |
A. |
VSEPR |
B. |
VBT |
C. |
MOT |
D. |
none of the above |
Answer: Option C
Explanation:
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38. |
Which of the following relation is not possible |
A. |
?H = ?H1 + ?H2 = ?H3 |
B. |
?E = E1 + E2 = E3 |
C. |
q = q1 + q2 = q3 |
D. |
??H (cycle) = 0 |
Answer: Option B
Explanation:
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39. |
Which of the following is not characteristics of reversible reaction |
A. |
whole amount of reactant does not change into product |
B. |
chemical equilibrium is established |
C. |
a catalyst changes the direction of reaction |
D. |
rate of forward reaction decreases as reaction proceeds |
Answer: Option C
Explanation:
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40. |
Which of the following points are important in connection with equilibrium constant. |
A. |
Kc is constant at given temperature |
B. |
Kc is unaffected by change in concentration of reactants or products |
C. |
Kc indicates the extent of reaction but not about the rate of reaction. |
D. |
All of the above |
Answer: Option D
Explanation:
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